Two neighbor aluminum foils form a channel for fresh or exhaust air stream. Heat is transfered when the air streams flow crossly through the channels, and fresh air and exhaust air is totally separated.

* Sensible heat recovery

* Total separation of fresh air & exhaust air streams

* Heat recovery efficiency up to 75%

* 2-side press shaping

* Double folded edge

* Completely joint sealing

* Resistance of pressure difference up to 2500Pa

* Under pressure of 700Pa, air leakage less than 0.06%.

B series (standard type)

Standard Holtop AHU heat transfer core is made by aluminum foil, with galvanized steel end cap. Wrap angle is made by aluminum alloy.

Suitable for most heat recovery occasions, 100℃ temperature resistance.

G series(high temperature type)

High temperature Holtop AHU heat transfer core  is made by aluminum foil, with galvanized steel end cap. Wrap angle is made by aluminum alloy. Suitable for high temperature working condition. 200℃ temperature resistance.

F series(anti-corrrosion type)

Anti-corrosion Holtop AHU heat transfer core is made by aliminum foil with anti-corrisive coating.  Suitable for corrosive environment. 

Holtop is one of the best manufacturer in ERV/HRV, rotary heat exchangers, plate heat exchangers and AHU area in China, founded in 2002, areas covered more than 30,000 square meters, turnover of 2012 is 42 million dollars, we have enthalpy testing lab. for products test. As a leader in energy/heat recovery equipments, we cooperate with more than 30 famous companies who located in Europe, the Middle east, Korea, Southeast Asia, Taiwan, etc. supplied equipment to Beijing Olympic and Shanghai Expo 2010, works together with domestic and international brands like Mcquay, Yo9rk, Trane, Sinko, DB, Hitachi, Mitsubishi etc.

Installed in air handling units

High efficiency Holtop AHU heat transfer core can be used in the air handling unit (AHU) as a main part of the heat recovery section, and the bypass can be built in when required. 

Installed in ducts

High efficiency Holtop AHU heat transfer core can also be installed in the ducts of ventilation system as a main part of the heat recovery section. The installation is very flexible. 

Installed in air cooler for wind turbin nacelle, and other waste heat recovery fields.